Rack-Mounting Rules - IBM Power 780 Technical Overview And Introduction

save previous investments, these power cords can be requested with an initial order of the
rack or with a later upgrade of the rack features.
The PDU has 12 client-usable IEC 320-C13 outlets. There are six groups of two outlets fed by
six circuit breakers. Each outlet is rated up to 10 amps, but each group of two outlets is fed
from one 15-amp circuit breaker.
The Universal PDUs are compatible with previous models.
Power cord and PDU: Based on the power cord that is used, the PDU can supply a range
of 4.8 - 19.2 kVA. The total kilovolt ampere (kVA) of all the drawers that are plugged into
the PDU must not exceed the power cord limitation.
Each system drawer to be mounted in the rack requires two power cords, which are not
included in the base order. For maximum availability, be sure to connect power cords from
the same system to two separate PDUs in the rack, and to connect each PDU to
independent power sources.

1.12.9 Rack-mounting rules

The system consists of one to four CEC enclosures. Each enclosure occupies 4U of
vertical rack space. When mounting the system into a rack account for the following primary
considerations:
For configurations with two, three, or four drawers, all drawers must be installed together in
the same rack, in a contiguous space of 8U, 12U, or 16U within the rack. The uppermost
enclosure in the system is the base enclosure. This enclosure will contain the active
service processor and the operator panel. If a second CEC enclosure is part of the
system, the backup service processor is contained in the second CEC enclosure.
Model 7014-T42, 7014-B42, or FC 0553 rack is constructed with a small flange at the
bottom of EIA location 37. When a system is installed near the top of 7014-T42, 7014-B42,
or FC 0553 rack, no system drawer can be installed in EIA positions 34, 35, or 36. This
approach is to avoid interference with the front bezel or with the front flex cable, depending
on the system configuration. A two-drawer system cannot be installed above position 29. A
three-drawer system cannot be installed above position 25. A four-drawer system cannot
be installed above position 21. (The position number refers to the bottom of the lowest
drawer.)
When a system is installed in a model 7014-T00, 7014-T42, 7014-B42, FC 0551, or
FC 0553 rack that has no front door, a Thin Profile Front Trim Kit must be ordered for the
rack. The required trim kit for the 7014-T00 or FC 0551 rack is FC 6263. The required trim
kit for the 7014-T42, 7014-B42, or FC 0553 rack is FC 6272. When upgrading from a
9117-MMA, trim kits FC 6263 or FC 6272 can be used for one drawer enclosures only.
The design of the Power 770 and Power 780 is optimized for use in a 7014-T00,
7014-T42, -7014B42, -S25, FC 0551, or FC 0553 rack. Both the front cover and the
processor flex cables occupy space on the front left side of an IBM 7014, FC 0551, and
FC 0553 rack that might not be available in typical non-IBM racks.
Acoustic door features are available with the 7014-T00, 7014-B42, 7014-T42, FC 0551,
and FC 0553 racks to meet the lower acoustic levels identified in the specification section
of this document. The acoustic door feature can be ordered on new T00, B42, T42,
FC 0551, and FC 0553 racks or ordered for the T00, B42, T42, FC 0551, and FC 0553
racks that you already own.
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IBM Power 770 and 780 (9117-MMD, 9179-MHD) Technical Overview and Introduction